How do I add a new profile picture, or change my existing picture?

To upload a new profile picture, or change your existing picture, just visit your own profile page by clicking on your name in the top-righthand corner of the screen. Once there, click the "Edit" button, then click "Change photo" and proceed to choose a profile picture to upload from your computer. After clicking the Save button at the bottom of the page, your new profile picture will be applied to your profile.